Rivet-extractor.



UNTTED STATES I Patented December 6, 1904.

JOHNSQN E. UONARD, OF HEATHSVILLE, ILLINOIS.

RlVET-EXTRACTOFL SPECIFICATION forming part of Letters Patent No.777,006, dated December 6, 1904:.

Application filed June 7, 1904. $eria1No. 211,551. (No model.)

To all w/wm it may concern:

Be it known that I, JOHNSON E. CoNARn, a citizen of theUnited States,residing at H eathsville, in the county of Crawford and State ofIllinois, have invented a new and useful Rivet- Extractor, of which thefollowing is a specification.

This invention relates to implements employed for extracting rivets andfor similar purposes, more particularly for the use of carriage andbuggy repairers for extracting the broken or damaged rivets which arerusted into the parts, and has for its object to produce asimply-constructed, powerful, and efficient implement of this characterand which may be easily manipulated by one man.

With these and other objects in view, which will appear as the nature ofthe invention is better understood, the same consists in certain novelfeatures of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, andin which cor responding parts are denoted by like designatingcharacters, is illustrated the preferred form of the embodiment of theinvention capable of carrying the same into practical operation, itbeing understood that the invention is not necessarily limited thereto,as various changes in the shape, proportions, and general assemblage ofthe parts may be resorted to without departing from the principle of theinvention or sacrificing any of its advantages, and the right istherefore reserved of making all the changes and modifications whichfairly fall within the scope of the invention and the claims madetherefor.

In the drawings thus employed, Figure 1 is a perspective View of arivet-extractor constructed in accordance with the invention; and Fig. 2is a side elevation, partially in section, of the operative end of theimproved device.

The improved implement comprises a base member 10, extended at one endinto ahandle 11 and provided near the other end with a standard 12,having an intermediate lateral guide-lug 13. Formed through thebase-mornher in alinement with the guide-lug is an aperture 14, andmounted for rotation, as by a clamp-bolt 15, is a plate 16, having aplurality of spaced apertures 17 of graduated sizes and adapted toregister consecutively with the base-aperture as the plate is rotated.The bolt 15 is provided with a wing-nut 18, operating beneath the basemember to facilitate the operation of changing the location of the plate16.

Mounted for movement through the guidelug 13 is a plunger 19 of lessdiameter than the smallest of the apertures 17 and disposed in alinementwith the base-aperture 1 1 and with whichever one of the apertures 17 isdisposed for the time being in registration with the same. The upper endof the plunger is provided with an enlarged head 20, against the underside of which bears a compression-spring 21, normally tending tomaintain the plunger in elevated position. The upper portion of thestandard 12 is bifurcated to form a pair of pivot-ears through whichextends a pin 22, and on the pin is mounted a lever 23, said lever beingprovided with an elongated slot for the passage of the pin and to permitsome longitudinal play of the lever during the operation of the device.The outer end of the lever is provided with a cain-face that bears onthe enlarged head 20, and when the inner end of the lever is raised thiscam-face will ride down on the enlarged head and depress the plunger.The base is further provided with a bifurcated standard 25, carrying apivot pin 24, on which is pivotally mounted a lever 26, that is extendedrearwardly to form an operating-handle 27. The adjacent ends of thelevers 23 and 26 are connected by a pivot-pin 28, that is extendedbeyond the opposite faces of the lever 26 and receives a yoke 30. To theyoke is connected the upper end of a tension-spring 29, the opposite endof the spring being riveted or otherwise secured, as at 31, to the base.The spring normally tends to maintain the levers in the positions shownin Figs. 1 and 2; but excessive downward movement of the two ends of thelevers is prevented by a projecting toe 32, carried by the lever 23 andadapted to engage against the upper face of the lever 26.

In the operation of the device the plate 16 is adjusted to present anopening of the desired size in alinement with the base-opening 14, afterwhich the plate is clamped in position by turning the nut 18. Pressureis then exerted on the outer end of the lever 26, and the connected endsof the levers 23 and 26 are elevated, causing the cam-face of the lever23 to ride down on the enlarged head 20 and force the plunger downwardagainst the rivet to be extracted, said rivet being forced through theopenings 17 and 14. As soon as the pressure is relieved the parts willbe restored to initial positions by the springs 21 and 29.

Having thus fully described the invention, what is claimed is- In animplement of the class described, a base-plate, having independent frontand rear standards and provided with an opening adjacent to the frontstandard, a guiding-lug projecting from the front standard, a plungerextending through an opening in said lug, and being in a position inalinement with the opening in the base, said plunger having an enlargedupper head, a compression-spring surrounding the plunger and tending tomaintain the same in elevated position, pivot-pins carried by bothstandards, a cam-lever having an elongated slot for the reception of thepivot-pin of the front standard, and provided at its forward end with acam-face for engaging the head of the plunger, and at its rear end withan integral stop-lug, an operatinglever mounted on the pivot-pin of therear standard, a pivot-pin connecting the adjacent ends of the twolevers, and a tension-spring extending between the lever-pivot and afixed point, and tending normally to maintain the stop-lug of thecamlever in engagement with the forward end of the operating-lever,substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JOHNSON E. CONARD.

Witnesses:

A. G. OAGINGTON, GEORGE C. SHAW.

